Higher solids solvent-based polyseter coating composition

Abstract

A 35-40% weight spray solids coating composition can be achieved with a binder consisting of about 35% polyester, 30% melamine crosslinker and 30% acrylic resin containing a thixotropic agent.

I claim: 
     
       1. A coating composition with a binder consisting essentially, in percent by weight, of a binder consisting essentially of about 30-40% of a polyester resin,   25-35% of a melamine crosslinker resin,   2-5% of a ethylene vinyl acetate copolymer wax dispersion,   25-30% of a styrenated acrylic resin with an isocyanate-amine thixotropic agent, so that the amount of thixotropic agent is 0.5-2% based on binder solids,   plus flow additives,   acid catalyst,   said binder being dispersed in a liquid media comprising solvents at a binder solids content of about 35-40% by weight.   
     
     
       2. The coating composition of claim 1 also containing pigments and extenders. 
     
     
       3. The coating composition of claim 2 having a pigment-to-binder weight ration in the range of 10-40 units pigment per 100 units of binder. 
     
     
       4. The coating composition of claim 3 having a pigment-to-binder weight ratio of about 15 to 100. 
     
     
       5. The coating composition of claim 3 having a pigment-to-binder weight ratio of about 20 to 100. 
     
     
       6. The coating composition of claim 3 having a pigment-to-binder weight ratio of about 30 to 100.